International Journal for Research in Applied Science & Engineering Technology (IJRASET) ISSN: 2321-9653; IC Value: 45.98; SJ Impact Factor: 7.429 Volume 8 Issue VIII Aug 2020- Available at www.ijraset.com D. What is vibro? 1) Vibro-compaction is a ground improvement technique that can be used to transfer structural loads to suitable levels in poor ground conditions. 2) The effect of vibration consolidates and strengthens the ground, helping to compact non cohesive soil such as sand that would otherwise be unsuitable for construction. E. How are Stone Columns Made? 1) While some stone columns were carved in one piece , as buildings became bigger , columns began to be constructed from separate drums. 2) These were individually carved and fitted together using a wooden dowel or metal peg in the centre of the drum. F. Brief Description of vibro stone Column 1) This technique involves the improvement of weak soils by the installation of densely compacted columns made from gravel or similar material with a vibrator. 2) The displacement process reinforces all soils in the treatment zone and densifies surrounding granular soils. 3) It’s a technique first developed by KELLER company founder , Johann Keller, which is used on thousands of projects. G. 1) 2) 3) 4) 5) 6) 7) 8)
Common Uses Reduce foundation settlement Increase bearing capacity , allowing reduction in footing size Increase stiffness Increase shear strength Reduce permeability Mitigate potential for liquefaction Permits shallow footing construction in treated fills Very effective for sand compaction and land reclamation.
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